My Toroidy transformer is finally on its way home, yesssss!!!!
Can't wait to get this rollin'
Do
Can't wait to get this rollin'
Do
Good work Do...but i recently found that if you don`t have a CNC machine at your disposal your project `stinks`.
Also i found that thick film smd resistors `stink` you should revert to THT. I wander what those bastards that use carbon composition resistors think. Maybe that distortion figures are not so important as long as they are low, but the harmonic profile, this is good engineering.
So i wonder... where is the joy of building an amp?
Also i found that thick film smd resistors `stink` you should revert to THT. I wander what those bastards that use carbon composition resistors think. Maybe that distortion figures are not so important as long as they are low, but the harmonic profile, this is good engineering.
So i wonder... where is the joy of building an amp?
Hi filenet,
I've been using many different tools to work on aluminum and I can do some very nice work with them without using a CNC. You just need to be very patient. It also require much more work but I'm not in a rush.
All my SMD resistors are Thin Film only which are exactly the same as TH Metal Film. Don't know much about carbon resistors aside knowing that my tube fan friends use them in their tube amplifiers and it usually sound really good. I guess its all about design but also, tube amplifiers usually have more distorsion.
Honestly, I love building amplifiers, I only hate doing all the cabling since I'm a little obsessed with having everything neat and tidy, it takes me so much time that I sometimes hate it... 😀
All the best!
Do
I've been using many different tools to work on aluminum and I can do some very nice work with them without using a CNC. You just need to be very patient. It also require much more work but I'm not in a rush.
All my SMD resistors are Thin Film only which are exactly the same as TH Metal Film. Don't know much about carbon resistors aside knowing that my tube fan friends use them in their tube amplifiers and it usually sound really good. I guess its all about design but also, tube amplifiers usually have more distorsion.
Honestly, I love building amplifiers, I only hate doing all the cabling since I'm a little obsessed with having everything neat and tidy, it takes me so much time that I sometimes hate it... 😀
All the best!
Do
I am sure that you like building amps, this it can be seen. I am just checking the latest trends 😀
I totally get what you mean though. Many times someone will build something but it will never be what he/she really wanted to achieve, sound-wise and look-wise and at this point it would have been much easier to buy something from the commercial side, that you know what to expect.
My first build over ten years ago (I was buying commercial only before) was made of MDF and sounded good but was really fugly, definitely not WAF, although my wife has a high tolerance, I did not push my luck for too long.. 😀
Ciao!
Do
My first build over ten years ago (I was buying commercial only before) was made of MDF and sounded good but was really fugly, definitely not WAF, although my wife has a high tolerance, I did not push my luck for too long.. 😀
Ciao!
Do
Successful builds take as much time planning as it does building. I'm fortunate to have 3D CAD software and a machine shop. It's rough building from scratch without a milling machine!
Yep, the standards are too high for the diy builder today. It should be called btc `better than commercial`.
Also take a look at this:
http://www.diyaudio.com/forums/solid-state/96192-post-solid-pics-562.html#post5330966
Also take a look at this:
http://www.diyaudio.com/forums/solid-state/96192-post-solid-pics-562.html#post5330966
I think the key is to not use the resistors anywhere near their power rating. I finally have a good distortion analyzer at my disposal so I can physically test this. DIY Audio Analyzer with AK5397/AK5394A and AK4490
Our home built amplifiers are usually better than commercial. I've had quite a few people run my VHex amps in their systems and they've all commented on how much better the detail and sound image is.
Our home built amplifiers are usually better than commercial. I've had quite a few people run my VHex amps in their systems and they've all commented on how much better the detail and sound image is.
Last edited:
Let`s say that i just informed you what the competition says about smd thick film resistors.
For sure your amplifiers sound good. I have tested myself.
For sure your amplifiers sound good. I have tested myself.
If you're curious maybe try swapping out the resistors in the feedback path and see if you can hear or measure any difference.
I reasonably doubt that will be a difference. The CFA measures better than 0.0009 distortion, practically 0.0009 is the limit of my measuring system.
That was my thinking as well. The NS amps are very hard to improve on. The distortion they are seeing is more likely to do with the implementation than the quality of the part.
Valery's Tribute-3000
I'm working my way through implementing Valery's updated Sansui Ba-3000 driver and OPS. I don't have a BA-3000 but I have a BA-2000, About 10v less B+ and a slightly smaller chassis. Well, its was smaller It's not smaller anymore.
I'm working my way through implementing Valery's updated Sansui Ba-3000 driver and OPS. I don't have a BA-3000 but I have a BA-2000, About 10v less B+ and a slightly smaller chassis. Well, its was smaller It's not smaller anymore.
Attachments
I think the updated boards can be seen in the center picture. OPS mounted on the heat sinks and the green driver boards.
I have to go to work again so it’ll be an couple weeks before I get back to it.
I have to go to work again so it’ll be an couple weeks before I get back to it.